This one day course will increase people’s knowledge on water weed species so they can assist in the eradication of water weeds. Topics to be covered include: water weed habitats, impacts of aquatic weeds on the environment, legislation requirements, weeds of national significance, common areas where aquatic weeds invade, aquatic plant recognition, correct disposal of aquatic plant materials, early detection survey guidelines.READ MORE

Elodea, a slender plant with whorled leaves, has been identified in four main areas in Alaska: Eyak Lake in the Cordova area, where the plant was first documented in 1982; and, since 2009, Chena Slough, Chena Lake and parts of the Chena River in Fairbanks, several lakes in the Kenai Peninsula, and lakes in Anchorage, including Sand Lake. Ecologists warn that the plant, known for its dense growth and high cold tolerance, threatens boating, float plane and commercial and sport fishing enterprises and could eventually affect fish species in water bodies across Alaska.READ MORE

In recent years, three invasive species of aquatic plants have been found in Pool 5 of
the Mississippi River near Buffalo City, WI. Water hyacinth and water lettuce were first found in 2011 in Pool 5; in 2012 parrot feather was found in an isolated bay of Pool 5. Thousands of water lettuce and water hyacinth plants were found in Pool 5 in 2011 and by 2012 the populations exploded into the tens of thousands.READ MORE

Lake Kohangatera is to receive treatment to eliminate two new invasive weed species following surveys by NIWA after the aggressive exotic weeds Elodea canadensis and Egeria densa (Oxygen weed) were found in the uppermost reaches of Gollans Swamp.READ MORE

The Parrot’s Feather weed is native to South America, but has taken hold at numerous sites across Britain, including the pond on Hatherleigh Moor. Matt Edworthy said, “All these efforts and the three tonnes only accounts for about half of the pond. When we turned up, the pond looked like it was covered in green baize, like a snooker table.”READ MORE

The same hydroacoustics technology used to navigate boats, track fish and hunt for sunken treasure is now making waves in weed control – shedding new light on the size and shape of plant beds lurking beneath the water.READ MORE

The bi-state Greenwood Lake Commission (GLC), as it has since its inception 13-years ago, continues to talk about how to combat aquatic weeds that, this year, have been particularly prolific in the lake’s extreme northern and southern shallows.READ MORE